docker login to hub from workflow

.github/workflows/release.yaml

@@ -16,16 +16,13 @@ jobs:
         echo ::set-output name=tag::$tag
       env:
         GITHUB_TAG: ${{ github.ref }}
-    - name: Set up Cloud SDK
-      uses: google-github-actions/setup-gcloud@master
-      with:
-        project_id: ${{ secrets.GCP_PROJECT_ID }}
-        service_account_key: ${{ secrets.GCP_SA_KEY }}
-        export_default_credentials: true
-    - name: Log in to gcloud CLI
-      run: gcloud auth configure-docker
     - name: Checkout
       uses: actions/checkout@v2.3.4
+    - name: Setup docker
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
     - name: Write Dashboard Environment Variables
       run: |
         cat >./dashboard/.env <<EOL